Re: Does a MOV shunt current or equalize voltage?

w_tom wrote:
On Aug 2, 8:31 pm, Jamie

A MOV does not have the ability to fully suppress the incoming
surge with out destroying it self if it's severe. I think most of us can
understand that. The idea is to have a fusable link or protect release
circuit that will open in line with the MOV in this case so that it
don't get past that point. Yes, the MOV may get and most likely will
be destroyed in the process of a major hit how ever, in all cases I have
seen the series protection circuit like breakers or fuses have been
able to open only because the MOV was doing its job by putting
excessive load in the circuit between it and the device its trying to
open! Mainly the fuse or breaker.. Normally when a MOV gets
destroyed it is shorted permanently but it does make the incoming
circuit open as it should unless some one had done a hack repair job
or does not know what they are doing!


Jamie has posted about things he has seen. He does not post what
MOV manufacturers states even in datasheets. MOVs that fail as Jamies
has seen are grossly undersized - violate what MOV manufacturers
require. Jamie has seen what happens with grossly undersized plug-in
protectors that also do not even claim to provide sufficient
protection.

What A piece of *** you are, operation of MOV's is common knowledge among those that know what the hell they're doing. This excludes you
pecker head!.



Properly sized 'whole house' protector earths a direct strike and
remains functional. Effective protectors that remain functional after
a direct strike also costs tens or 100 times less money per protected
appliance. But those who only know from what they have seen (ie " I
have seen the series protection circuit like breakers or fuses have
been able to open) did not first learn the science.

Those fuses or circuit breakers are emergency backup proetction
when the protector did not do what it is supposed to do. Surges are
done in microseconds. Those fuses or breakers open in milliseconds.
Those fuses or breakers are to stop a fire because the protector was
grossly undersized.

Jamie - go read some manufacturer datasheets. Note the charts so
that MOV protectors can be properly sized - do not fail
catastrophically. However plug-in protectors often gorssly
undersized their MOVs. The myths promoted by that exploding MOV then
get the naive to recommend more of those surge protectors.

what a piece of ***!, 100% all the way... You know nothing about the
subject other than what you think you understand from material you have
gotten your hands on.

Try talking from real experience for a change instead of out your ass.



My god, I just hope our current instructors in school teaching this
field aren't as dim as you are. God help us all if this is the case.


Please digest better what you read before polluting it all over the place.

We have enough miss guided people already..

http://webpages.charter.net/jamie_5";

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